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CLIENT: Diputació de Barcelona

LOCATION: Sant Vicenç de Torelló, Barcelona (Spain)

KEY ELEMENTS: Nonlinear analysis, assessment with reliability techniques, widening and seismic design

SERVICES: Feasiblity Studies/Conceptual Design, Repair and Rehabilitation

BUDGET: Thanks to the material optimization, the cost of the rehabilitation work amounts to US$ 1.7 million (aprox 800 $/m2). Engineering fees were about 10% of the construction cost

PROJECT DURATION: Design 1999 - Site Supervision 2001-2002

PEDELTA’S KEY PERSONNEL: Juan Sobrino, PhD, PEng, PE; Javier Jordán, MSc, PE; Jordi Pons, MSc

PROJECT DESCRIPTION

Seismic analysis has conditioned the conceptual design of the bridge as it is located in a moderate seismic zone. The bridge crosses the Ter River in Sant Vicenç de Torelló. It was built after the Spanish post-civil-war (1946-1955). The scarcity of means at the time of construction had resulted in a gradual disintegration of the materials used in some structural elements.

The bridge consists of 5 plain concrete arches; each arch is 107 ft (32.7 m) in length and 4 ft (1.35 m) thick. The deck is 25 ft (7.8 m) wide and includes two cantilevers and a main vault supported by concrete pier-walls. Design was carried out meeting the Spanish Code requirements. It was necessary to perform seismic analysis using a spectral multi-modal method to assess the bridge. The safety level of the arches faced by the new overloads was evaluated using a non-linear analysis to obtain the various modes of collapse. Reliability techniques were used to assess the structural safety of the arches.

The main challenges that the rehabilitation project faced was to design and correct the structural deficiencies found on the structure and improve the functionality of the bridge by widening the deck from 25 ft (7.8 m) to 36 ft (11 m).

 

DESIGN/CONSTRUCTION APPROACH

Design was carried out meeting the Spanish Code requirements. It was necessary to perform seismic analysis using a spectral multi-modal method to assess the bridge. The safety level of the arches faced by the new overloads was evaluated using a non-linear analysis to obtain the various modes of collapse. Reliability techniques were used to assess the structural safety of the arches.

+ FEATURES

CLIENT: Diputació de Barcelona

LOCATION: Sant Vicenç de Torelló, Barcelona (Spain)

KEY ELEMENTS: Nonlinear analysis, assessment with reliability techniques, widening and seismic design

SERVICES: Feasiblity Studies/Conceptual Design, Repair and Rehabilitation

BUDGET: Thanks to the material optimization, the cost of the rehabilitation work amounts to US$ 1.7 million (aprox 800 $/m2). Engineering fees were about 10% of the construction cost

PROJECT DURATION: Design 1999 - Site Supervision 2001-2002

PEDELTA’S KEY PERSONNEL: Juan Sobrino, PhD, PEng, PE; Javier Jordán, MSc, PE; Jordi Pons, MSc

+ DESCRIPTION

PROJECT DESCRIPTION

Seismic analysis has conditioned the conceptual design of the bridge as it is located in a moderate seismic zone. The bridge crosses the Ter River in Sant Vicenç de Torelló. It was built after the Spanish post-civil-war (1946-1955). The scarcity of means at the time of construction had resulted in a gradual disintegration of the materials used in some structural elements.

The bridge consists of 5 plain concrete arches; each arch is 107 ft (32.7 m) in length and 4 ft (1.35 m) thick. The deck is 25 ft (7.8 m) wide and includes two cantilevers and a main vault supported by concrete pier-walls. Design was carried out meeting the Spanish Code requirements. It was necessary to perform seismic analysis using a spectral multi-modal method to assess the bridge. The safety level of the arches faced by the new overloads was evaluated using a non-linear analysis to obtain the various modes of collapse. Reliability techniques were used to assess the structural safety of the arches.

The main challenges that the rehabilitation project faced was to design and correct the structural deficiencies found on the structure and improve the functionality of the bridge by widening the deck from 25 ft (7.8 m) to 36 ft (11 m).

 

DESIGN/CONSTRUCTION APPROACH

Design was carried out meeting the Spanish Code requirements. It was necessary to perform seismic analysis using a spectral multi-modal method to assess the bridge. The safety level of the arches faced by the new overloads was evaluated using a non-linear analysis to obtain the various modes of collapse. Reliability techniques were used to assess the structural safety of the arches.